<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        // 定义变量
        // var iNum01 = 12;
        // var sTr = 'abc';
        // var bIsMove = true
        var iNum01 = 12, sTr = 'abc', bIsMove = true;
        var iNum02;
        alert(iNum01)
        alert(sTr)
        alert(bIsMove)
        alert(iNum02)
    </script>
</head>
<body>
    
</body>
</html>